\\ˈpīˌrōn\ noun (-s)
1. : either of two isomeric carbonyl compounds C5H4O2 derived from pyran:
a. : an oily liquid delta-lactone; 2H-pyran-2-one — called also alpha-pyrone, 2-pyrone; compare coumalin, coumarin
b. : a hygroscopic crystalline compound; 4H-pyran-4-one — called also gamma-pyrone, 4-pyrone; compare chromone; structural formula
2. : a derivative of either of the pyrones

Useful english dictionary. 2012.

Look at other dictionaries:

  • Pyrone — Py rone, n. [G. pyron, an abbr. of pyrokoman.] (Org. Chem.) An unsaturated cyclic compound, {C5H4O2}, of which two varieties are known, [alpha] and [gamma]. [gamma] pyrone is the parent substance of several natural yellow dyestuffs …   The Collaborative International Dictionary of English

  • pyrone — [pī′rōn΄, pī rōn′] n. [Ger pyron: see PYRO & ONE] 1. either of two isomeric, unsaturated, closed chain compounds, C5H4O2, from which several yellow dyes are derived 2. any of a class of compounds derived from pyrone …   English World dictionary

  • pyrone — ● pyrone nom féminin Composé hétérocyclique C5H4O2, dérivé des pyrannes. Nom générique des dérivés de ces composés …   Encyclopédie Universelle

  • Pyrone — Pyrone,   Pyrane …   Universal-Lexikon

  • Pyrone — pyran 2 one pyran 4 one Les pyrones …   Wikipédia en Français

  • Pyrone — Pyrones or pyranones are a class of cyclic chemical compounds. They contain an unsaturated six membered ring containing one oxygen atom and a ketone functional group. There are two isomers denoted as 2 pyrone and 4 pyrone. The 2 pyrone structure… …   Wikipedia

  • Pyrone — 2 Pyron 4 Pyron Pyrone oder Pyranone sind eine Gru …   Deutsch Wikipedia

  • pyrone — pironas statusas T sritis chemija formulė (O=)C₅H₄O atitikmenys: angl. pyrone rus. пирон ryšiai: sinonimas – piranonas …   Chemijos terminų aiškinamasis žodynas

  • pyrone — /puy rohn, puy rohn /, n. Chem. either of two heterocyclic ketones having the formula C5H4O2. [1890 95; PYR + ONE] * * * …   Universalium

  • pyrone — noun Any of a class of cyclic chemical compounds that contain an unsaturated six membered ring with one oxygen atom and a ketone functional group. Syn: pyranone …   Wiktionary

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